The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 1977
Filed:
Nov. 14, 1975
Osamu Ito, Toyota, JA;
Nobuhito Hobo, Inuyama, JA;
Yoshihiko Tsuzuki, Anjo, JA;
Michio Iyoda, Aichi, JA;
Nippondenso Co., Ltd., Kariya, JA;
Abstract
An electric governor for an internal combustion engine comprises an engine speed sensor, a phase shifter, a twin-T type filter and a multiplier for multiplying outputs of the phase shifter and the twin-T type filter. The twin-T type filter is arranged to vary its gain and phase in response to the difference between the peculiar frequency thereof and the frequency of the speed signal, whereby the multiplied outputs varies its amplitude and polarity in response to the frequency difference. A servo motor which is adapted to control the engine speed control mechanism is connected to the multiplier, so that the engine can be controlled to run at a predetermined speed which corresponds to the peculiar frequency of the twin-T type filter.